What does accessibility refer to?

(1 point)
Responses

using grade-level words and activities
using grade-level words and activities
accessing the online textbook without a password
accessing the online textbook without a password
keeping a clutter-free workspace at home
keeping a clutter-free workspace at home
The usability of course content regardless of a person’s ability or disability

The usability of course content regardless of a person’s ability or disability.